MakeMyTrip India — airline cancelled flight still not received the complete refund

Website:

www.makemytrip.com

I have booked two international flights from makemytrip, both are cancelled by airline itself.
They have processed half of the amount in my account and for further queries they are not responding to my mails or calls.
It's very strange for new booking agents are always available and for refund no one give any concern. They provide us self support and chat services for refund option which is of no use.

For one flight booking i spent rs.28098 and they processed rs.15022. What about rest of the pending amount.
And for another around rs.2000 is pending.